US20030150622A1 - Formation isolation valve - Google Patents

Formation isolation valve Download PDF

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Publication number
US20030150622A1
US20030150622A1 US10364585 US36458503A US2003150622A1 US 20030150622 A1 US20030150622 A1 US 20030150622A1 US 10364585 US10364585 US 10364585 US 36458503 A US36458503 A US 36458503A US 2003150622 A1 US2003150622 A1 US 2003150622A1
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Patent type
Prior art keywords
valve
actuator
assembly
isolation
valves
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US10364585
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US7347272B2 (en )
Inventor
Dinesh Patel
David Hill
Jabus Davis
David Lamont
Charles Harding
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Schlumberger Technology Corp
Hill David A
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Schlumberger Technology Corp
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/06Valve arrangements for boreholes or wells in wells
    • E21B34/10Valve arrangements for boreholes or wells in wells operated by control fluid supplied from above ground
    • E21B34/105Valve arrangements for boreholes or wells in wells operated by control fluid supplied from above ground retrievable, e.g. wire line retrievable, i.e. with an element which can be landed into a landing-nipple provided with a passage for control fluid
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/06Valve arrangements for boreholes or wells in wells

Abstract

The present invention provides for high volume flow from a well. A retrievable formation isolation valve allows high volume flow through the remaining casing or tubing. Alternatively, a large bore valve configuration that is not retrieved, but remains as part of the casing, can be used. The present invention also includes methods to allow for high volume flow using retrievable isolation valves or large bore valves.

Description

  • [0001]
    This application claims the benefit of U.S. Provisional Application 60/356,496 filed Feb. 13, 2002.
  • BACKGROUND
  • [0002]
    1. Field of Invention
  • [0003]
    The present invention pertains to isolation valves used in subsurface wells, and particularly to retrievable and large bore formation isolation valves.
  • [0004]
    2. Related Art
  • [0005]
    It is often desirable to isolate a portion of a well. For example, a portion of the well may be isolated during insertion or retrieval of a drill string. It may also be desirable to isolate a portion of a well during perforation operations, particularly during underbalanced completion operations. There are several devices and methods available to perforate a formation using underbalanced completion operations. Those include using special connectors such as “Completion Insertion and Retrieval under Pressure” connectors, placing formation isolation valves in the completion, and using wireline or coil tubing. However, each of those options has shortcomings, and none of those methods or devices allow, in the case of multiple production zones, flowing each zone individually for clean up and testing. Therefore, there is a continuing need for improved isolation devices.
  • SUMMARY
  • [0006]
    The present invention provides for high volume flow from a well. A retrievable formation isolation valve allows high volume flow through the remaining casing or tubing. Alternatively, a large bore valve configuration that is not retrieved, but remains as part of the casing, can be used. The present invention also includes methods to allow for high volume flow using retrievable isolation valves or large bore valves.
  • [0007]
    Advantages and other features of the invention will become apparent from the following description, drawings, and claims.
  • BRIEF DESCRIPTION OF THE DRAWING
  • [0008]
    [0008]FIG. 1 is a schematic diagram of a completion assembly constructed in accordance with the present invention.
  • [0009]
    [0009]FIG. 2 is a schematic diagram of an alternative embodiment of a completion assembly constructed in accordance with the present invention.
  • [0010]
    [0010]FIG. 3 is an enlarged view of a valve shown in the completion assembly of FIG. 2.
  • [0011]
    [0011]FIG. 4 is a schematic diagram of an alternative embodiment of a completion assembly constructed in accordance with the present invention.
  • [0012]
    [0012]FIG. 5 is a schematic diagram of an alternative embodiment of a completion assembly constructed in accordance with the present invention.
  • [0013]
    [0013]FIG. 6 is an enlarged view of a valve shown in the completion assembly of FIG. 5.
  • [0014]
    [0014]FIG. 7 is a schematic diagram of a flow controller used in accordance with the present invention.
  • DETAILED DESCRIPTION
  • [0015]
    Referring to FIG. 1, a completion assembly 10 comprises a production tubing 12 having an interior passageway 14 in which a downstream formation isolation valve 16 and an upstream formation isolation valve 18 are disposed. Formation isolation valve 16 sealingly mounts to tubing 12 using downstream seal assembly 20, and formation isolation valve 18 sealingly mounts to tubing 12 using upstream seal assembly 22. When closed, each valve 16, 18 isolates that portion of passageway 14 that is downstream of that particular isolation valve from the upstream portion of passageway 14.
  • [0016]
    Production tubing 12 is shown disposed in a wellbore 24 having multiple production zones 26, 28. Production zone 26 is downstream of production zone 28. In this description, flow is assumed to go from production zones 26, 28 to the surface. Thus, upstream means in a direction opposite the flow and downstream means in the direction of the flow. Formation isolation valve 16 is mounted downstream of production zone 26, and formation isolation valve 18 is mounted downstream of production zone 28, but upstream of zone 26. Wellbore 24 may or may not have a casing 30 mounted therein, or casing 30 may extend in only a portion of wellbore 24. The annular region 32 between tubing 12 and casing 30, or wellbore 24 if casing 30 is not present, is sealed by a packer 34. Packer 34 isolates the downstream portion of annular region 32, relative to packer 34, from the upstream portion.
  • [0017]
    [0017]FIG. 1 shows index couplings 36, 37 along predetermined sections of tubing 12. Index couplings 36, 37 are used to properly locate valves 16, 18 relative to production zones 26, 28. Index couplings are well known and explained by Ohmer in U.S. Pat. No. 5,996,711.
  • [0018]
    [0018]FIG. 2 shows an alternative embodiment in which formation isolation valves 16, 18 are run in with casing 30 and cemented in place to become integral with casing 30. That allows the use of a larger bore formation isolation valve than is possible when the isolation valve is mounted in the interior passageway 14 of tubing 12. In the embodiment of FIG. 2, tubing 12 has a perforating gun 38 attached to the upstream end of tubing 12 and an actuator 40 attached to the upstream end of gun 38. In this case, actuator 40 is a shifting tool. The larger bore of valves 16, 18 permit tubing 12, gun 38, and actuator 40 to pass through valves 16, 18, when open.
  • [0019]
    [0019]FIG. 3 provides a more detailed view of formation isolation valve 18. Formation isolation valve 18 is a ball valve. In the embodiment of FIG. 2, valve 16 is also a ball valve. FIG. 3 also shows a valve operator 42. Valve operator 42 is a mechanical link that responds to (shifting tool) actuator 40 to open or close the valve. Valve 16 has a similar valve operator 42. Though shown as ball valves, formation isolation valves 16, 18 are not restricted to ball valves. Nor are they restricted to a particular type of valve operator, or even to a single type of valve operator. For example, valve operator 42 can be a hydraulic, pneumatic, or electromechanical device. Actuator 40 for such valve operators may be pressure applied within the annulus or tubing, a hydraulic, pneumatic, electrical, or fiber optic control line, pressure pulse signals transmitted to a receiver, or a rupture disk.
  • [0020]
    Instead of being cemented in place as in FIG. 2, valves 16, 18 can also be temporarily sealed in place inside casing 30. FIG. 4 shows valve 16 suspended from a removeable packer 44. If removeable packer 44 is used, valves 16, 18 are sized to allow tubing 12 to pass through open valves 16, 18. Removeable packer 44 can be, for example, a retrievable packer, as disclosed by Allen in U.S. Pat. No. 3,976,133, a cup packer, as disclosed by Hutchison in U.S. Pat. No. 4,385,664, or an inflatable packer, as disclosed by Sanford, et al in U.S. Pat. No. 4,768,590. Removeable packer 44, by design, can be set in place to form a temporary seal, and then released and retrieved at will. There are various designs and the present invention is not limited to the examples referred to in this paragraph.
  • [0021]
    A similar arrangement can be placed inside tubing 12 instead of casing 30. This would produce an embodiment similar to that of FIG. 1, but removeable packers 44 would effectively replace index couplings 36, 37 and seal assemblies 20, 22. Alternatively, seal bores (similar to a polished bore receptacle 56 shown in FIG. 1), in conjunction with selective profiles 50 (FIG. 6) or collets (not shown) may be used to position and seal valves 16, 18 inside tubing 12. Therefore, one aspect of the present invention is a retrievable isolation valve that can be selectively opened and closed (e.g., a ball valve), and that can be temporarily set in a tubing or other well conduit.
  • [0022]
    [0022]FIG. 5 shows the use of formation isolation valves 16, 18 in a multilateral application. Valve 16 is placed in a main bore 46 of wellbore 24 and valve 18 is placed in a lateral branch 48. In the embodiment shown, valve 16 is cemented in place with casing 30, as described above. Valve 16 is a large bore valve allowing high volume flow. Valve 18 is set in place using a selective profile 50 (see FIG. 6) to properly locate it within lateral branch 48. Valve 18 is set below a removeable packer 44 to seal lateral branch 48 from main bore 46. Valve 18 and packer 44 can be removed to permit high volume flow through the full bore of branch 48.
  • [0023]
    To operate completion assembly 10 of FIG. 1 to perform perforation operations, for example, an upstream portion 52 of tubing 12 is run in wellbore 24 such that it extends from the bottom of casing 30 past the most upstream production zone 28. In this embodiment, tubing 12 is made of various sections joined as tubing 12 is lowered into wellbore 24. Upstream portion 52 of tubing 12 is often referred to as a liner and can be cemented in place in wellbore 24. A downstream portion 54 of tubing 12 is joined to upstream portion 52 using, for example, a polished bore receptacle 56. Packer 34 is shown just upstream of polished bore receptacle 56 in FIG. 1.
  • [0024]
    Index couplings 36, 37 are incorporated into tubing 12 such that they are properly positioned relative to production zones 26, 28 when upstream portion 52 of tubing 12 is properly set into wellbore 24. Formation isolation valve 18, along with upstream seal assembly 22, is run in and sealingly secured to upstream index coupling 37. Valve 18 would normally be run into the well in the open position, but it could be run in closed and actuated open. Gun 38 and actuator 40 are run in through valve 18 and gun 38 is fired. After perforating is completed, gun 38 and actuator 40 are extracted, with actuator 40 closing valve 18 as it passes valve operator 42. That isolates perforated zone 28. Valve 18 can be opened to allow zone 28 to flow to remove debris, and then closed again to isolate zone 28.
  • [0025]
    Formation isolation valve 16, along with downstream seal assembly 20, is then run in and sealingly secured to downstream index coupling 36. Gun 38 and actuator 40 are run in through valve 16 and gun 38 is fired. After perforating is completed, gun 38 and actuator 40 are extracted, with actuator 40 closing valve 16 as it passes valve operator 42. That isolates perforated zone 26. Valve 16 can be opened to allow zone 26 to flow to remove debris, and then closed again to isolate zone 26. Then, valves 16, 18 are pulled out of the well, as described below, to present the unrestricted, large inner diameter of tubing 12 for high rate flow.
  • [0026]
    Valves 16, 18 can be removed in various ways. The release elements described in this paragraph are known in the art and not shown in the figures of this specification. In the embodiment of FIG. 1, index coupling 36, for example, can have a sliding sleeve to shear connecting pins securing seal assembly 20 to coupling 36, and a “fishing” tool can retrieve the released components. Similarly, the blended embodiment of FIGS. 1 and 4, in which removeable packer 44 effectively replaces seal assemblies 20, 22 and index couplings 36, 37, can be retrieved because of the design of the packer itself. Valves 16, 18 could also be set using keys, for example, so that valves 16, 18 could be milled.
  • [0027]
    Operation of the embodiment of FIG. 4 is similar to that of FIG. 1. A first removable packer 44, with formation isolation valve 18, is set downstream of zone 28. Gun 38 and actuator 40 are run in on tubing 12 through valve 18 and gun 38 is fired. After perforating is completed, gun 38 and actuator 40 are extracted, and actuator 40 closes valve 18 to isolate perforated zone 28. Valve 18 can be opened to allow zone 28 to flow, and then closed again to isolate zone 28. A second removable packer 44, with formation isolation valve 16, is set downstream of zone 26. Gun 38 and actuator 40 are run in on tubing 12 through valve 16 and gun 38 is fired. After perforating is completed, gun 38 and actuator 40 are extracted, with actuator 40 closing valve 16 to isolate perforated zone 26. Valve 16 can be opened to allow zone 26 to flow, and then closed again to isolate zone 26. Then, valves 16, 18 are pulled out of the well, as described above, to present the unrestricted, large inner diameter of casing 30 or tubing 12, set with a packer 34, for high rate flow.
  • [0028]
    In other embodiments, such as that of FIG. 2, valves 16, 18 need not be removed. Because valves 16, 18 are set in casing 30, they are sized to accommodate the full bore of tubing 12.
  • [0029]
    Operation of the embodiment of FIG. 2 is essentially the same as for the embodiment of FIG. 1, except valves 16, 18 are set in casing 30 instead of tubing 12. Casing 30 is assembled with valves 16, 18 placed so that they are properly positioned relative to zones 26, 28 when casing 30 is set and cemented in place. Gun 38 and actuator 40 are run in through valve 18 and gun 38 is fired. After perforating is completed, gun 38 and actuator 40 are extracted, with actuator 40 closing valve 18 as it passes valve operator 42. That isolates perforated zone 28. Valve 18 can be opened to allow zone 28 to flow, and then closed again to isolate zone 28.
  • [0030]
    Gun 38 and actuator 40 are then run in through valve 16 and gun 38 is fired. After perforating is completed, gun 38 and actuator 40 are extracted, with actuator 40 closing valve 16 as it passes valve operator 42. That isolates perforated zone 26. Valve 16 can be opened to allow zone 26 to flow, and then closed again to isolate zone 26. Valves 16, 18 can then be actuated open to allow production through casing 30, or tubing 12 can be run in, with a packer 34 set downstream of valve 16 to seal annular region 32. Tubing 12 would allow well fluid to be produced through passageway 14.
  • [0031]
    The embodiment of FIG. 5 would be operated similarly. Each zone 26, 28 could be perforated and “flowed” in isolation from the other zone. Those valves that are removeable can be removed to provide for high rate flow. Those valves that remain in place are sized to accommodate high volume flow.
  • [0032]
    The present invention overcomes the shortcomings mentioned in the Background section of this specification, as well as others not specifically highlighted. In particular, perforating long sections with specialized connectors or coil tubing takes a long time, and using formation isolation valves in a conventional manner does not provide a large inner diameter for a high production rate. The present invention includes various apparatus and methods to achieve high volume flow rates subsequent to performing desired completion operations. The present invention also allows placement of other devices, such as a flow controller 58 (FIG. 7), either after performing initial operations or during a later intervention.
  • [0033]
    Although only a few example embodiments of the present invention are described in detail above, those skilled in the art will readily appreciate that many modifications are possible in the example embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the following claims. It is the express intention of the applicant not to invoke 35 U.S.C. § 112, paragraph 6 for any limitations of any of the claims herein, except for those in which the claim expressly uses the words ‘means for’ together with an associated function.

Claims (56)

    What is claimed is:
  1. 1. A completion assembly for use in a well comprising:
    a conduit having an interior passageway; and
    a first valve sealingly and removeably mounted to the conduit in the interior passageway, the first valve being capable of opening and closing multiple times.
  2. 2. The completion assembly of claim 1 in which the first valve is a ball valve.
  3. 3. The completion assembly of claim 1 further comprising an actuator.
  4. 4. The completion assembly of claim 3 in which the actuator is a shifting tool.
  5. 5. The completion assembly of claim 3 in which the actuator is a pressure pulse signal.
  6. 6. The completion assembly of claim 3 in which the actuator is an applied pressure.
  7. 7. The completion assembly of claim 3 in which the actuator is a hydraulic, pneumatic, electrical, or fiber optic control line.
  8. 8. The completion assembly of claim 3 in which the first valve has a first valve operator to open and close the first valve in response to the actuator.
  9. 9. The completion assembly of claim 1 in which the first valve is placed downstream of a first formation.
  10. 10. The completion assembly of claim 1 further comprising a second valve sealingly and removeably mounted in the interior passageway, the second valve being capable of opening and closing multiple times.
  11. 11. The completion assembly of claim 10 in which the first valve is placed downstream of a first formation and the second valve is placed downstream of a second formation and upstream of the first formation.
  12. 12. The completion assembly of claim 10 in which the second valve is a ball valve.
  13. 13. The completion assembly of claim 10 further comprising an actuator to selectively open and close the first and second valves.
  14. 14. The completion assembly of claim 13 in which the actuator is a shifting tool.
  15. 15. The completion assembly of claim 13 in which the actuator is a pressure pulse signal.
  16. 16. The completion assembly of claim 13 in which the actuator is an applied pressure.
  17. 17. The completion assembly of claim 13 in which the actuator is a hydraulic, pneumatic, electrical, or fiber optic control line.
  18. 18. The completion assembly of claim 13 in which the first valve has a first valve operator to open and close the first valve in response to the actuator and the second valve has a second valve operator to open and close the second valve in response to the actuator.
  19. 19. The completion assembly of claim 1 in which the first valve is placed in a branch of a multilateral well.
  20. 20. An isolation system for use in a well comprising:
    a casing having an interior passageway; and
    a first valve mounted to the casing and registering with the interior passageway when the first valve is open, the first valve being capable of opening and closing multiple times.
  21. 21. The isolation system of claim 20 further comprising an actuator to open and close the first valve.
  22. 22. The isolation system of claim 20 in which the first valve is a ball valve.
  23. 23. The isolation system of claim 20 further comprising a second valve mounted to the casing and in registry with the interior passageway when the second valve is open, the second valve being capable of opening and closing multiple times.
  24. 24. The isolation system of claim 23 further comprising a tubing, the tubing being able to pass through the open first and second valves.
  25. 25. The isolation system of claim 23 further comprising an actuator to selectively open and close the first and second valves.
  26. 26. The isolation system of claim 25 in which the actuator is a shifting tool.
  27. 27. The isolation system of claim 25 in which the actuator is an applied pressure.
  28. 28. The isolation system of claim 25 in which the actuator is a hydraulic, pneumatic, electrical, or fiber optic control line.
  29. 29. The isolation system of claim 25 in which the first valve has a first valve operator, and the second valve has a second valve operator, each valve operator independently opening or closing its respective valve in response to the actuator.
  30. 30. The isolation system of claim 20 in which the first valve is removeable.
  31. 31. The isolation system of claim 20 in which the first valve is part of the casing and the casing is cemented in the well.
  32. 32. A completion assembly deployed within a multilateral well having a main bore and a lateral bore, the completion assembly comprising:
    a first valve sealingly mounted in the main bore; and
    a second valve sealingly mounted in the lateral bore; and in which
    at least one of the valves is removeable, and at least one of the valves can be opened and closed multiple times.
  33. 33. The completion assembly of claim 32 further comprising a tubing, the tubing being able to pass through at least one of the open valves.
  34. 34. The completion assembly of claim 32 further comprising an actuator to selectively open and close the first and second valves, the first and second valves being capable of opening and closing multiple times.
  35. 35. The completion assembly of claim 34 in which the actuator is a shifting tool.
  36. 36. The completion assembly of claim 34 in which the actuator is an applied pressure.
  37. 37. The completion assembly of claim 34 in which the actuator is a hydraulic, pneumatic, electrical, or fiber optic control line.
  38. 38. The completion assembly of claim 34 in which the first valve has a first valve operator, and the second valve has a second valve operator, each valve operator independently opening or closing its respective valve in response to the actuator.
  39. 39. A retrievable valve for use in a well comprising:
    a housing having a central bore;
    an interior seal moveably mounted in the housing, the interior seal being moveable multiple times between an open position to allow flow through the central bore and a closed position to prevent flow through the central bore; and
    a release connected to the housing.
  40. 40. The valve of claim 39 further comprising an outer seal to seal between the housing and an outer constraint.
  41. 41. The valve of claim 39 in which the interior seal resides on a ball having a central passage that registers with the central bore when the valve is open.
  42. 42. The valve of claim 39 in which the release is a removeable packer.
  43. 43. The valve of claim 39 in which the release is a selective profile.
  44. 44. An apparatus for use in a well comprising:
    a first valve sealingly and removeably mounted in an interior passageway of a casing and registering with the interior passageway when the first valve is open, the first valve being capable of opening and closing multiple times.
  45. 45. The apparatus of claim 44 further comprising a second valve sealingly and removeably mounted in the interior passageway of the casing and registering with the interior passageway when the second valve is open, the second valve being capable of opening and closing multiple times.
  46. 46. A method for isolating a portion of a well comprising:
    attaching a first removable valve to a conduit in the well;
    actuating the first valve open or closed;
    performing operations in the well; and
    removing the first valve from the conduit.
  47. 47. The method of claim 46 in which performing operations comprises perforating a formation upstream of the first valve.
  48. 48. The method of claim 46 further comprising allowing formation fluid to flow to remove debris from the well.
  49. 49. The method of claim 46 further comprising maintaining a well pressure at or below a formation pressure.
  50. 50. The method of claim 46 further comprising:
    attaching a second removable valve to the conduit downstream of the first valve;
    actuating the second valve open or closed;
    performing operations in the well; and
    removing the second valve from the conduit.
  51. 51. The method of claim 50 in which performing operations comprises perforating a formation upstream of the second valve.
  52. 52. The method of claim 46 further comprising:
    running a perforating assembly through the open first valve;
    perforating a first production zone while pressure in the well is underbalanced;
    extracting the perforating assembly;
    attaching a second removable valve to the conduit downstream of a second production zone, the second production zone being downstream of the first valve;
    running the perforating assembly through the open second valve;
    perforating the second production zone while pressure in the well is underbalanced and the first valve is closed;
    extracting the perforating assembly; and
    extracting the first and second valves from the conduit.
  53. 53. The method of claim 46 in which the first valve is attached to an index coupling.
  54. 54. The method of claim 53 further comprising attaching a flow controller in the index coupling after removing the first valve.
  55. 55. A method for isolating a portion of a well comprising:
    inserting a casing having at least a first isolation valve in the well;
    actuating the first valve open or closed;
    performing operations in the well; and
    producing fluid from the well.
  56. 56. The method of claim 55 further comprising actuating a second valve open or closed.
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US12033416 US7617876B2 (en) 2002-02-13 2008-02-19 Formation isolation valve and method of use

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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050077086A1 (en) * 2003-10-14 2005-04-14 Vise Charles E. Multiple zone testing system
US20060196665A1 (en) * 2005-03-01 2006-09-07 Owen Oil Tools Lp Novel device and methods for firing perforating guns
US20070012457A1 (en) * 2005-07-13 2007-01-18 Curtis Fredrick D Underbalanced drilling applications hydraulically operated formation isolation valve
US20080223585A1 (en) * 2007-03-13 2008-09-18 Schlumberger Technology Corporation Providing a removable electrical pump in a completion system
EP2122122A1 (en) * 2007-01-25 2009-11-25 Welldynamics, Inc. Casing valves system for selective well stimulation and control
US20100000789A1 (en) * 2005-03-01 2010-01-07 Owen Oil Tools Lp Novel Device And Methods for Firing Perforating Guns
GB2463187A (en) * 2007-03-13 2010-03-10 Schlumberger Holdings A method of deploying a completion system into a multilateral well
US20110067855A1 (en) * 2009-09-18 2011-03-24 Van De Vliert David R Geothermal liner system with packer
US20120067567A1 (en) * 2010-09-22 2012-03-22 Schlumberger Technology Corporation Downhole completion system with retrievable power unit
US20120138309A1 (en) * 2010-12-07 2012-06-07 Baker Hughes Incorporated Stackable multi-barrier system and method
US8235127B2 (en) 2006-03-30 2012-08-07 Schlumberger Technology Corporation Communicating electrical energy with an electrical device in a well
US8312923B2 (en) 2006-03-30 2012-11-20 Schlumberger Technology Corporation Measuring a characteristic of a well proximate a region to be gravel packed
WO2013042128A2 (en) * 2010-06-03 2013-03-28 Dass Chanchal System and method for simultaneous and segregated oil and gas production from multiple zone wells
WO2012040220A3 (en) * 2010-09-20 2013-04-25 Weatherford/Lamb, Inc. Signal operated isolation valve
WO2013148015A1 (en) * 2010-12-07 2013-10-03 Baker Hughes Incorporated Barrier valve system and method of closing same by withdrawing upper completion
WO2014055063A1 (en) * 2012-10-02 2014-04-10 Halliburton Energy Services, Inc. System and method for actuating isolation valves in a subterranean well
US8739884B2 (en) 2010-12-07 2014-06-03 Baker Hughes Incorporated Stackable multi-barrier system and method
US8839850B2 (en) 2009-10-07 2014-09-23 Schlumberger Technology Corporation Active integrated completion installation system and method
US8893794B2 (en) 2011-02-16 2014-11-25 Schlumberger Technology Corporation Integrated zonal contact and intelligent completion system
GB2516187A (en) * 2012-03-29 2015-01-14 Baker Hughes Inc Barrier valve system and method of closing same by withdrawing upper completion
US8955600B2 (en) 2011-04-05 2015-02-17 Baker Hughes Incorporated Multi-barrier system and method
US9016372B2 (en) 2012-03-29 2015-04-28 Baker Hughes Incorporated Method for single trip fluid isolation
US9016389B2 (en) 2012-03-29 2015-04-28 Baker Hughes Incorporated Retrofit barrier valve system
US9051811B2 (en) 2010-12-16 2015-06-09 Baker Hughes Incorporated Barrier valve system and method of controlling same with tubing pressure
WO2015094347A1 (en) 2013-12-20 2015-06-25 Halliburton Energy Services, Inc. Multilateral wellbore stimulation
US9121250B2 (en) 2011-03-19 2015-09-01 Halliburton Energy Services, Inc. Remotely operated isolation valve
US9175560B2 (en) 2012-01-26 2015-11-03 Schlumberger Technology Corporation Providing coupler portions along a structure
US9175523B2 (en) 2006-03-30 2015-11-03 Schlumberger Technology Corporation Aligning inductive couplers in a well
WO2016010589A1 (en) * 2014-07-17 2016-01-21 Schlumberger Canada Limited Simplified isolation valve for esp/well control application
US9249559B2 (en) 2011-10-04 2016-02-02 Schlumberger Technology Corporation Providing equipment in lateral branches of a well
GB2532108A (en) * 2012-10-02 2016-05-11 Halliburton Energy Services Inc System and method for actuating isolation valves in a subterranean well
US9482072B2 (en) 2013-07-23 2016-11-01 Halliburton Energy Services, Inc. Selective electrical activation of downhole tools
US9644476B2 (en) 2012-01-23 2017-05-09 Schlumberger Technology Corporation Structures having cavities containing coupler portions
US9828829B2 (en) 2012-03-29 2017-11-28 Baker Hughes, A Ge Company, Llc Intermediate completion assembly for isolating lower completion
US9938823B2 (en) 2012-02-15 2018-04-10 Schlumberger Technology Corporation Communicating power and data to a component in a well

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050121190A1 (en) * 2003-12-08 2005-06-09 Oberkircher James P. Segregated deployment of downhole valves for monitoring and control of multilateral wells
US7387165B2 (en) 2004-12-14 2008-06-17 Schlumberger Technology Corporation System for completing multiple well intervals
US7322417B2 (en) 2004-12-14 2008-01-29 Schlumberger Technology Corporation Technique and apparatus for completing multiple zones
WO2011146866A3 (en) 2010-05-21 2012-04-05 Prad Research And Development Limited Method and apparatus for deploying and using self-locating downhole devices
US7950468B2 (en) * 2006-07-06 2011-05-31 Horton J Dale Wellbore plug
US7832489B2 (en) * 2007-12-19 2010-11-16 Schlumberger Technology Corporation Methods and systems for completing a well with fluid tight lower completion
US7980316B2 (en) * 2008-04-23 2011-07-19 Schlumberger Technology Corporation Formation isolation valve
US8365832B2 (en) * 2010-01-27 2013-02-05 Schlumberger Technology Corporation Position retention mechanism for maintaining a counter mechanism in an activated position
US8684099B2 (en) * 2010-02-24 2014-04-01 Schlumberger Technology Corporation System and method for formation isolation
US8607882B2 (en) * 2011-04-27 2013-12-17 Halliburton Energy Services, Inc. Load balancing spherical diameter single seat ball system
US8490687B2 (en) * 2011-08-02 2013-07-23 Halliburton Energy Services, Inc. Safety valve with provisions for powering an insert safety valve
US9238953B2 (en) 2011-11-08 2016-01-19 Schlumberger Technology Corporation Completion method for stimulation of multiple intervals
US9650851B2 (en) 2012-06-18 2017-05-16 Schlumberger Technology Corporation Autonomous untethered well object
EP2976492B1 (en) * 2013-03-22 2017-06-21 Services Petroliers Schlumberger Valve with integral piston
US9631468B2 (en) 2013-09-03 2017-04-25 Schlumberger Technology Corporation Well treatment
WO2017061979A1 (en) * 2015-10-05 2017-04-13 Halliburton Energy Services, Inc. Isolating a multi-lateral well with a barrier

Citations (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568715A (en) * 1968-02-08 1971-03-09 Otis Eng Co Well tools
US3675720A (en) * 1970-07-08 1972-07-11 Otis Eng Corp Well flow control system and method
US3732925A (en) * 1972-01-18 1973-05-15 Exxon Production Research Co Apparatus for conducting operations in a well through a normally closed valve
US4189003A (en) * 1972-07-12 1980-02-19 Otis Engineering Corporation Method of completing wells in which the lower tubing is suspended from a tubing hanger below the wellhead and upper removable tubing extends between the wellhead and tubing hanger
US4201363A (en) * 1978-07-17 1980-05-06 Otis Engineering Corporation Tubing retrievable surface controlled subsurface safety valve
US4253524A (en) * 1979-06-21 1981-03-03 Kobe, Inc. High flow check valve apparatus
US4354554A (en) * 1980-04-21 1982-10-19 Otis Engineering Corporation Well safety valve
US4903775A (en) * 1989-01-06 1990-02-27 Halliburton Company Well surging method and apparatus with mechanical actuating backup
US4949788A (en) * 1989-11-08 1990-08-21 Halliburton Company Well completions using casing valves
US5176164A (en) * 1989-12-27 1993-01-05 Otis Engineering Corporation Flow control valve system
US5311936A (en) * 1992-08-07 1994-05-17 Baker Hughes Incorporated Method and apparatus for isolating one horizontal production zone in a multilateral well
US5531270A (en) * 1995-05-04 1996-07-02 Atlantic Richfield Company Downhole flow control in multiple wells
US5662165A (en) * 1995-02-09 1997-09-02 Baker Hughes Incorporated Production wells having permanent downhole formation evaluation sensors
US5704426A (en) * 1996-03-20 1998-01-06 Schlumberger Technology Corporation Zonal isolation method and apparatus
US5732776A (en) * 1995-02-09 1998-03-31 Baker Hughes Incorporated Downhole production well control system and method
US5810087A (en) * 1996-01-24 1998-09-22 Schlumberger Technology Corporation Formation isolation valve adapted for building a tool string of any desired length prior to lowering the tool string downhole for performing a wellbore operation
US5992524A (en) * 1995-09-27 1999-11-30 Natural Reserves Group, Inc. Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access
US5996711A (en) * 1997-04-14 1999-12-07 Schlumberger Technology Corporation Method and apparatus for locating indexing systems in a cased well and conducting multilateral branch operations
US6024173A (en) * 1998-03-03 2000-02-15 Schlumberger Technology Corporation Inflatable shifting tool
US6041864A (en) * 1997-12-12 2000-03-28 Schlumberger Technology Corporation Well isolation system
US6085845A (en) * 1996-01-24 2000-07-11 Schlumberger Technology Corporation Surface controlled formation isolation valve adapted for deployment of a desired length of a tool string in a wellbore
US6279651B1 (en) * 1999-07-20 2001-08-28 Halliburton Energy Services, Inc. Tool for managing fluid flow in a well
US20010025710A1 (en) * 1998-11-19 2001-10-04 Herve Ohmer Method and apparatus for connecting a main well bore and a lateral branch
US6302216B1 (en) * 1998-11-18 2001-10-16 Schlumberger Technology Corp. Flow control and isolation in a wellbore
US20010035288A1 (en) * 1998-11-19 2001-11-01 Brockman Mark W. Inductively coupled method and apparatus of communicating with wellbore equipment
US6328112B1 (en) * 1999-02-01 2001-12-11 Schlumberger Technology Corp Valves for use in wells
US6330913B1 (en) * 1999-04-22 2001-12-18 Schlumberger Technology Corporation Method and apparatus for testing a well
US20020007953A1 (en) * 2000-07-18 2002-01-24 Liknes Alvin C. Method and apparatus for removing water from well-bore of gas wells to permit efficient production of gas
US6666275B2 (en) * 2001-08-02 2003-12-23 Halliburton Energy Services, Inc. Bridge plug

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2332465B (en) * 1995-03-27 1999-10-20 Baker Hughes Inc Hydrocarbon production using multilateral wellbores
US5868210A (en) 1995-03-27 1999-02-09 Baker Hughes Incorporated Multi-lateral wellbore systems and methods for forming same
US6075462A (en) 1997-11-24 2000-06-13 Smith; Harrison C. Adjacent well electromagnetic telemetry system and method for use of the same
GB2353308B (en) 1998-04-22 2002-06-05 Schlumberger Technology Corp Controlling multiple downhole tools
GB2337779B (en) 1998-05-28 2001-08-29 Philip Head Bore hole safety valves
GB2362669B (en) 1999-01-26 2003-06-04 Schlumberger Technology Corp Method and apparatus for formation isolation in a well

Patent Citations (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568715A (en) * 1968-02-08 1971-03-09 Otis Eng Co Well tools
US3675720A (en) * 1970-07-08 1972-07-11 Otis Eng Corp Well flow control system and method
US3732925A (en) * 1972-01-18 1973-05-15 Exxon Production Research Co Apparatus for conducting operations in a well through a normally closed valve
US4189003A (en) * 1972-07-12 1980-02-19 Otis Engineering Corporation Method of completing wells in which the lower tubing is suspended from a tubing hanger below the wellhead and upper removable tubing extends between the wellhead and tubing hanger
US4201363A (en) * 1978-07-17 1980-05-06 Otis Engineering Corporation Tubing retrievable surface controlled subsurface safety valve
US4253524A (en) * 1979-06-21 1981-03-03 Kobe, Inc. High flow check valve apparatus
US4354554A (en) * 1980-04-21 1982-10-19 Otis Engineering Corporation Well safety valve
US4903775A (en) * 1989-01-06 1990-02-27 Halliburton Company Well surging method and apparatus with mechanical actuating backup
US4949788A (en) * 1989-11-08 1990-08-21 Halliburton Company Well completions using casing valves
US5176164A (en) * 1989-12-27 1993-01-05 Otis Engineering Corporation Flow control valve system
US5311936A (en) * 1992-08-07 1994-05-17 Baker Hughes Incorporated Method and apparatus for isolating one horizontal production zone in a multilateral well
US5662165A (en) * 1995-02-09 1997-09-02 Baker Hughes Incorporated Production wells having permanent downhole formation evaluation sensors
US5732776A (en) * 1995-02-09 1998-03-31 Baker Hughes Incorporated Downhole production well control system and method
US5531270A (en) * 1995-05-04 1996-07-02 Atlantic Richfield Company Downhole flow control in multiple wells
US5992524A (en) * 1995-09-27 1999-11-30 Natural Reserves Group, Inc. Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access
US6085845A (en) * 1996-01-24 2000-07-11 Schlumberger Technology Corporation Surface controlled formation isolation valve adapted for deployment of a desired length of a tool string in a wellbore
US5950733A (en) * 1996-01-24 1999-09-14 Schlumberger Technology Corporation Formation isolation valve
US5810087A (en) * 1996-01-24 1998-09-22 Schlumberger Technology Corporation Formation isolation valve adapted for building a tool string of any desired length prior to lowering the tool string downhole for performing a wellbore operation
US5704426A (en) * 1996-03-20 1998-01-06 Schlumberger Technology Corporation Zonal isolation method and apparatus
US5996711A (en) * 1997-04-14 1999-12-07 Schlumberger Technology Corporation Method and apparatus for locating indexing systems in a cased well and conducting multilateral branch operations
US6041864A (en) * 1997-12-12 2000-03-28 Schlumberger Technology Corporation Well isolation system
US6024173A (en) * 1998-03-03 2000-02-15 Schlumberger Technology Corporation Inflatable shifting tool
US6302216B1 (en) * 1998-11-18 2001-10-16 Schlumberger Technology Corp. Flow control and isolation in a wellbore
US20010025710A1 (en) * 1998-11-19 2001-10-04 Herve Ohmer Method and apparatus for connecting a main well bore and a lateral branch
US20010035288A1 (en) * 1998-11-19 2001-11-01 Brockman Mark W. Inductively coupled method and apparatus of communicating with wellbore equipment
US6328112B1 (en) * 1999-02-01 2001-12-11 Schlumberger Technology Corp Valves for use in wells
US6330913B1 (en) * 1999-04-22 2001-12-18 Schlumberger Technology Corporation Method and apparatus for testing a well
US6279651B1 (en) * 1999-07-20 2001-08-28 Halliburton Energy Services, Inc. Tool for managing fluid flow in a well
US20020007953A1 (en) * 2000-07-18 2002-01-24 Liknes Alvin C. Method and apparatus for removing water from well-bore of gas wells to permit efficient production of gas
US6666275B2 (en) * 2001-08-02 2003-12-23 Halliburton Energy Services, Inc. Bridge plug

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050077086A1 (en) * 2003-10-14 2005-04-14 Vise Charles E. Multiple zone testing system
US7004252B2 (en) * 2003-10-14 2006-02-28 Schlumberger Technology Corporation Multiple zone testing system
US20060196665A1 (en) * 2005-03-01 2006-09-07 Owen Oil Tools Lp Novel device and methods for firing perforating guns
US20100000789A1 (en) * 2005-03-01 2010-01-07 Owen Oil Tools Lp Novel Device And Methods for Firing Perforating Guns
US8079296B2 (en) 2005-03-01 2011-12-20 Owen Oil Tools Lp Device and methods for firing perforating guns
US7913603B2 (en) * 2005-03-01 2011-03-29 Owen Oil Tolls LP Device and methods for firing perforating guns
US7597151B2 (en) * 2005-07-13 2009-10-06 Halliburton Energy Services, Inc. Hydraulically operated formation isolation valve for underbalanced drilling applications
US20070012457A1 (en) * 2005-07-13 2007-01-18 Curtis Fredrick D Underbalanced drilling applications hydraulically operated formation isolation valve
US8312923B2 (en) 2006-03-30 2012-11-20 Schlumberger Technology Corporation Measuring a characteristic of a well proximate a region to be gravel packed
US8235127B2 (en) 2006-03-30 2012-08-07 Schlumberger Technology Corporation Communicating electrical energy with an electrical device in a well
US9175523B2 (en) 2006-03-30 2015-11-03 Schlumberger Technology Corporation Aligning inductive couplers in a well
EP2122122A4 (en) * 2007-01-25 2010-12-22 Welldynamics Inc Casing valves system for selective well stimulation and control
US20110061875A1 (en) * 2007-01-25 2011-03-17 Welldynamics, Inc. Casing valves system for selective well stimulation and control
US8893787B2 (en) 2007-01-25 2014-11-25 Halliburton Energy Services, Inc. Operation of casing valves system for selective well stimulation and control
EP2122122A1 (en) * 2007-01-25 2009-11-25 Welldynamics, Inc. Casing valves system for selective well stimulation and control
GB2463187B (en) * 2007-03-13 2011-03-23 Schlumberger Holdings Methods of deploying a completion system into a multilateral well
GB2463187A (en) * 2007-03-13 2010-03-10 Schlumberger Holdings A method of deploying a completion system into a multilateral well
US20080223585A1 (en) * 2007-03-13 2008-09-18 Schlumberger Technology Corporation Providing a removable electrical pump in a completion system
US20110067855A1 (en) * 2009-09-18 2011-03-24 Van De Vliert David R Geothermal liner system with packer
US8474525B2 (en) * 2009-09-18 2013-07-02 David R. VAN DE VLIERT Geothermal liner system with packer
US8839850B2 (en) 2009-10-07 2014-09-23 Schlumberger Technology Corporation Active integrated completion installation system and method
WO2013042128A2 (en) * 2010-06-03 2013-03-28 Dass Chanchal System and method for simultaneous and segregated oil and gas production from multiple zone wells
WO2013042128A3 (en) * 2010-06-03 2013-07-04 Dass Chanchal System and method for simultaneous and segregated oil and gas production from multiple zone wells
EP2770160A3 (en) * 2010-09-20 2015-04-22 Weatherford Technology Holdings, LLC Signal operated isolation valve
US8978750B2 (en) 2010-09-20 2015-03-17 Weatherford Technology Holdings, Llc Signal operated isolation valve
WO2012040220A3 (en) * 2010-09-20 2013-04-25 Weatherford/Lamb, Inc. Signal operated isolation valve
US20120067567A1 (en) * 2010-09-22 2012-03-22 Schlumberger Technology Corporation Downhole completion system with retrievable power unit
WO2013148015A1 (en) * 2010-12-07 2013-10-03 Baker Hughes Incorporated Barrier valve system and method of closing same by withdrawing upper completion
US8813855B2 (en) * 2010-12-07 2014-08-26 Baker Hughes Incorporated Stackable multi-barrier system and method
US20120138309A1 (en) * 2010-12-07 2012-06-07 Baker Hughes Incorporated Stackable multi-barrier system and method
US9027651B2 (en) 2010-12-07 2015-05-12 Baker Hughes Incorporated Barrier valve system and method of closing same by withdrawing upper completion
US8739884B2 (en) 2010-12-07 2014-06-03 Baker Hughes Incorporated Stackable multi-barrier system and method
US9051811B2 (en) 2010-12-16 2015-06-09 Baker Hughes Incorporated Barrier valve system and method of controlling same with tubing pressure
US8893794B2 (en) 2011-02-16 2014-11-25 Schlumberger Technology Corporation Integrated zonal contact and intelligent completion system
US9121250B2 (en) 2011-03-19 2015-09-01 Halliburton Energy Services, Inc. Remotely operated isolation valve
US8955600B2 (en) 2011-04-05 2015-02-17 Baker Hughes Incorporated Multi-barrier system and method
US9249559B2 (en) 2011-10-04 2016-02-02 Schlumberger Technology Corporation Providing equipment in lateral branches of a well
US9644476B2 (en) 2012-01-23 2017-05-09 Schlumberger Technology Corporation Structures having cavities containing coupler portions
US9175560B2 (en) 2012-01-26 2015-11-03 Schlumberger Technology Corporation Providing coupler portions along a structure
US9938823B2 (en) 2012-02-15 2018-04-10 Schlumberger Technology Corporation Communicating power and data to a component in a well
GB2516187A (en) * 2012-03-29 2015-01-14 Baker Hughes Inc Barrier valve system and method of closing same by withdrawing upper completion
US9828829B2 (en) 2012-03-29 2017-11-28 Baker Hughes, A Ge Company, Llc Intermediate completion assembly for isolating lower completion
US9016372B2 (en) 2012-03-29 2015-04-28 Baker Hughes Incorporated Method for single trip fluid isolation
US9016389B2 (en) 2012-03-29 2015-04-28 Baker Hughes Incorporated Retrofit barrier valve system
GB2516187B (en) * 2012-03-29 2015-12-02 Baker Hughes Inc Barrier valve system and method of closing same by withdrawing upper completion
GB2518797B (en) * 2012-10-02 2016-12-21 Halliburton Energy Services Inc System and method for actuating isolation valves in a subterranean well
GB2532108A (en) * 2012-10-02 2016-05-11 Halliburton Energy Services Inc System and method for actuating isolation valves in a subterranean well
GB2532108B (en) * 2012-10-02 2017-03-01 Halliburton Energy Services Inc System and method for actuating isolation valves in a subterranean well
WO2014055063A1 (en) * 2012-10-02 2014-04-10 Halliburton Energy Services, Inc. System and method for actuating isolation valves in a subterranean well
GB2518797A (en) * 2012-10-02 2015-04-01 Halliburton Energy Serv Inc System and method for actuating isolation valves in a subterranean well
US9482072B2 (en) 2013-07-23 2016-11-01 Halliburton Energy Services, Inc. Selective electrical activation of downhole tools
CN105637171A (en) * 2013-12-20 2016-06-01 哈利伯顿能源服务公司 Multilateral wellbore stimulation
EP3036394A4 (en) * 2013-12-20 2017-03-08 Halliburton Energy Services Inc Multilateral wellbore stimulation
WO2015094347A1 (en) 2013-12-20 2015-06-25 Halliburton Energy Services, Inc. Multilateral wellbore stimulation
WO2016010589A1 (en) * 2014-07-17 2016-01-21 Schlumberger Canada Limited Simplified isolation valve for esp/well control application

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US20080135225A1 (en) 2008-06-12 application
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US7617876B2 (en) 2009-11-17 grant
US7347272B2 (en) 2008-03-25 grant

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